JP5707724B2 - Petri dish for medium preparation - Google Patents

Description

  The present invention relates to a petri dish for preparing a medium comprising a petri dish body and a lid, and more specifically, a petri dish body and a lid part for preparing a medium whose corners are formed into an arc shape and improved in slipping and scratching, and The present invention relates to a petri dish for preparing a culture medium comprising the petri dish body and a lid.

  The petri dish is configured as a set of two very shallow cylindrical containers with slightly different diameters so as to be nested. If these are called a petri dish body and a lid part, respectively, the lid part is slightly larger and shallower than the petri dish body, and the petri dish body is slightly smaller and deeper than the lid part. Since the upper end of the petri dish body is processed so as to be parallel to the bottom part, when the petri dish body with the lid part is left still, the petri dish body and the lid part are in close contact with each other by its own weight, so that it is properly sealed It has become. In addition, it is common that the culture medium filled in the petri dish main body is stored with the lid portion turned to the mounting table side by inverting the petri dish after the lid portion is mounted after filling. This is because it is possible to avoid various bacteria from falling on the surface of the culture medium.

  In order to improve the storage property during storage, a circular peripheral wall is formed on the top plate, and the top plate is recessed to form an annular rib concentric with the top plate and having a certain width. There is a petri dish lid portion in which a plurality of stacking bosses formed by recessing the outer part of the width are formed (Patent Document 1). By making the lid part into a special shape, deformation due to compressive load can be avoided and adhesion between the lid parts can also be avoided.

  In addition, there is a petri dish having a handle collar for facilitating the operation of opening the lid (Patent Document 2). In Patent Document 2, it is described that when R (R) is attached to a finger contact portion of a handle collar, the contact of the finger when opening the lid portion is softened.

On the other hand, if the culture medium main body for medium preparation is filled with the culture medium and then stored while the petri dish is turned upside down, the culture medium may dry and the culture medium may peel from the petri dish main body.
A petri dish for preparing a medium capable of preventing such a fall of the medium has also been developed. The petri dish for preparing a fractionation medium is divided into two by a partition wall arranged in the center of the petri dish body. The upper surface of the bottom of each compartment is continuous at the base of the partition wall and inner wall surrounding it. And the bottom surface is formed flat (Patent Document 3). It is said that when the continuous depression is formed at the base of the partition wall and the inner wall, the separation of the medium is remarkably suppressed unlike the fractionation medium in which the depression is discontinuously formed.

JP 2001-112464 A JP-A-2005-312317 Japanese Patent No. 4204644

  Even in a petri dish for medium preparation without a partition wall, the medium can be peeled off as in the petri dish for preparation of a fraction medium. However, conventionally, there has been no intention of preventing the peeling of the medium in a normal medium-producing petri dish.

  Moreover, the petri dish for preparing a fractionation medium disclosed in the above-mentioned Patent Document 3 is not sufficient for preventing the separation of the medium. The reason for this is not clear, but it is presumed that the petri dish body made of synthetic resin is likely to be deformed such as warpage and distortion, and the medium is easily peeled off by such deformation. That is, generally, a petri dish for preparing a medium is manufactured by injection molding using a transparent synthetic resin, and the resin injection port is a central portion of the bottom surface portion. In this aspect, when the side wall is gripped with both hands, the shape is symmetrical, and thus the side wall is easily distorted, and the medium is easily peeled off due to this distortion.

  Further, it is considered that the exfoliation of the medium occurs not only due to distortion of the petri dish body but also due to vibration from filling the medium to use. For example, when inoculating a petri dish main body filled with a culture medium and also when inserting into an incubator after inoculation, vibration is generated due to friction between the bottom surface of the petri dish main body and the mounting table, and peeling is caused by such vibration. Is likely to occur.

  Further, when the lid portion is attached to the petri dish body, if the sizes of the outer periphery of the petri dish body and the inner periphery of the lid portion are greatly different, vibration is likely to occur when the petri dish body and the lid portion come into contact with each other. Such vibrations contribute to the peeling of the medium.

  In addition, the medium-producing petri dish is preferably capable of stably and compactly stacking a plurality of medium-producing petri dishes during storage. In addition, it is preferable that generation of vibrations can be avoided also in the case of stacking during such storage or use.

In view of the said present condition, an object of this invention is to provide the petri dish for culture medium preparation which can prevent peeling of a culture medium.
Moreover, an object of this invention is to provide the petri dish for culture medium preparation which can laminate | stack the petri dish for culture medium preparation stably and simply.

  As a result of examining the exfoliation of the medium in the petri dish for preparing the medium in detail, it is possible to avoid distortion during use by disposing the foot part on the bottom part of the petri dish body and forming the foot part discontinuously. When the corner portion of the petri dish body is formed with an arc, the slipping property is improved, so that vibration is reduced, and peeling of the culture medium due to vibration can be avoided. When the rim height that can be fitted is formed, the storage property can be improved, and when the protrusion is formed on the upper surface of the rim height, it functions as a foot during storage and reduces friction with the mounting table. Thus, the inventors have found that the detachment of the medium can be efficiently avoided, and completed the present invention.

That is, the present invention is a petri dish body for preparing a culture medium comprising a bottom surface portion and a side wall disposed on the outer periphery of the bottom surface portion , wherein the bottom surface portion is provided with a convex portion provided near the side wall , the discontinuously foot to the lower surface of the bottom portion is formed, the sidewall, the bottom portion and the foot, the corner portion is formed by an arc, and the convex portion, and are mutually the foot, said projection parts between, characterized Rukoto is disposed so as to fill the gap between the foot portion, there is provided a laboratory dish body medium creation.

Also, the present invention is that the foot portion formed on the bottom portion, characterized in that it is formed asymmetrically with respect to either the axis passing through the center portion of the laboratory dish body, providing the laboratory dish body It is.

Further, the present invention is a petri dish lid comprising a top surface portion and a side wall disposed on the outer periphery of the top surface portion, and the top surface portion has an edge height that can be fitted to the upper end of the side wall of the petri dish body. A petri dish lid is provided , wherein a plurality of ribs are formed inside the edge height portion, and a protrusion is formed on the upper surface of the edge height portion. To do.

Before SL protrusions may be configured discontinuously, there is provided a lid of the petri dish.

Furthermore, the present invention is pre-Kien higher region, wherein the corners of said protrusions are formed in a circular arc, there is provided a lid of the petri dish.
In addition, the present invention provides a petri dish for preparing a medium comprising the petri dish body for preparing the medium and a lid portion of the petri dish.

  Moreover, this invention provides the culture medium which fills a culture medium in the said petri dish for culture medium preparation.

  According to the petri dish for preparing a culture medium of the present invention, since the foot is formed near the outer periphery of the bottom surface of the petri dish body, the contact surface with the mounting table can be reduced, and vibration due to friction can be suppressed. . For this reason, if a culture medium is filled in this, the peeling of the culture medium which arises by vibration can be suppressed efficiently. Moreover, since the said foot part is discontinuous and asymmetric from the center part, even when the petri dish body is gripped from the left and right, there is little distortion, and it is possible to efficiently avoid peeling of the culture medium due to the distortion.

  In addition, when the edge height portion that can be fitted to the upper end of the side wall of the petri dish body is formed on the lid portion, the bottom portion and the edge height portion are combined even when laminating a plurality of petri dishes for medium preparation, Can be stored in a space-saving manner.

Moreover, if a projection part is formed in the edge height part of a cover part, it will function as a foot part at the time of preservation | save, and friction with a mounting base can be reduced and peeling of a culture medium can be avoided efficiently.
Moreover, the petri dish for making a culture medium of the present invention can be manufactured by injection molding, is easy to manufacture, and can be manufactured at low cost.

Culture locations invention, the above medium creation dish, which was filled with culture medium, in which separation of the medium due to vibration during storage or during working is suppressed.

Fig. 1 is a petri dish for preparing a culture medium of the present invention, and is a diagram for explaining a state in which a lid (200) is attached to the petri dish body (100) of the present invention, and Fig. 1 (a) is a petri dish for preparing a culture medium. FIG. 1B is a side view of the culture medium petri dish (300), and FIG. 1C is a bottom view of the culture medium petri dish (300). FIG. 2 is a diagram for explaining an example of a preferred embodiment of the petri dish body (100) for preparing a culture medium of the present invention. 2A is a plan view of the petri dish body (100), FIG. 2B is a right side view, FIG. 2C is a front view, and FIG. 2D is a bottom view. FIG. 3 is a view for explaining an example of a preferred embodiment of the petri dish body (100) for preparing a culture medium of the present invention. Unlike FIG. 2, a plurality of convex portions (30) are formed on the upper surface (10a) of the bottom surface portion. The aspect by which is formed is shown. FIG. 4 is a diagram for explaining a convex portion (30) formed on the petri dish body (100) of the present invention, and FIG. 4 (a) is a partial cross-sectional view taken along line AA of FIG. 3 (a). FIG. 4B is a partial cross-sectional view taken along the line BB in FIG. FIG. 5 is a view for explaining the foot portion (40) formed on the bottom surface portion (10) of the petri dish body (100) of the present invention, and is a partial cross-sectional view taken along the line CC in FIG. 3 (d). FIG. 6 is an explanatory diagram showing the relationship between the foot (30) and the convex portion (30) in the petri dish body (100) of the present invention. 7A and 7B are diagrams for explaining an example of a preferred embodiment of the petri dish lid portion 200 of the present invention, FIG. 7A is a plan view, FIG. 7B is a left side view, and FIG. ) Is a right side view, FIG. 7 (d) is a front view, and FIG. 7 (e) is a bottom view. FIG. 8 is a view for explaining the edge height portion (230) of the lid portion (200) used in the present invention, and is a partial cross-sectional view taken along the line AA of FIG. 7 (a). The petri dish body when the lid part (200) is mounted is indicated by a broken line, and the culture medium petri dish body (100) when a plurality of culture medium petri dishes are stacked is indicated by a broken line at the upper part of the lid part (200). FIG. 9 is a diagram for explaining the protrusion (240) and the edge height (230) formed on the lid (200) used in the present invention, and a partial enlargement in the vicinity of the line BB in FIG. 7 (a). FIG. FIG. 10 is a partially enlarged view of the vicinity of the line CC in FIG. 7 (e), and is a view for explaining the rib (235a) and the rib (235b) formed inside the edge height portion (230). FIG. 11 is a cross-sectional view taken along the line B-B of FIG. 7A, and the rib (235a) and the rib (235b) formed inside the edge height portion (230) of the lid portion (200) used in the present invention. FIG.

  A first aspect of the present invention is a petri dish body for preparing a culture medium comprising a bottom surface portion and a side wall disposed on the outer periphery of the bottom surface portion, and the petri dish body is formed discontinuously on the bottom surface of the bottom surface portion. A petri dish body for preparing a culture medium, wherein a foot is formed, and the side wall, the bottom surface, and the foot are corners formed by arcs.

  A second aspect of the present invention is a petri dish lid portion including a top surface portion and a side wall disposed on the outer periphery of the top surface portion, and the top surface portion is fitted to the upper end of the side wall of the petri dish body. The petri dish lid portion is characterized in that a rim height portion is formed, and a plurality of ribs are formed inside the rim height portion.

The third aspect of the present invention is a petri dish for medium preparation comprising the petri dish body for medium preparation and the lid part.
Furthermore, a fourth aspect of the present invention is a medium obtained by filling the medium-producing petri dish with a medium. Hereinafter, the present invention will be described in detail with reference to the drawings.

(1) Petri dish body for culture medium The petri dish for culture medium (300) of this invention consists of a petri dish body for culture medium preparation (100) and a cover part (200). FIG. 1 is a plan view, a bottom view, and a side view showing an example of a petri dish (300) for preparing a culture medium according to the present invention in a state in which a lid (200) is attached to the petri dish body (100). FIG. 1A is a plan view of a petri dish for preparing a culture medium. The top surface portion (210) of the lid portion (200), the side wall (220) disposed on the outer periphery thereof, and a part of the top surface portion (210). The edge height (230) formed in the vicinity of the side wall (220) and the protrusion (240) formed discontinuously at the upper portion of the edge height (230) are shown. FIG. 1B is a side view of the culture medium petri dish (300), and shows a mode in which a lid (200) having a larger diameter and shorter than that is attached to the petri dish body (100). Moreover, FIG.1 (c) is a bottom view of the petri dish for culture medium preparation (300), the bottom face part (10) of the petri dish body (100), the side wall (20) arrange | positioned in the outer periphery, and the said side wall (20 ) In the vicinity of the foot (40) formed discontinuously. However, FIG. 1 is an exemplification, and the present invention is not limited to FIG.

  FIG. 2 is a diagram illustrating the petri dish body (100) shown in FIG. 2A is a plan view of the petri dish body (100), FIG. 2B is a right side view, FIG. 2C is a front view, and FIG. 2D is a bottom view. The left side view is symmetrical with the right side view, and the rear view is symmetrical with the front view.

(I) Bottom portion The petri dish body for preparing a culture medium of the present invention comprises a bottom portion (10) and a side wall (20) disposed on the outer periphery of the bottom portion (10), as shown in FIG. A foot part (40) formed discontinuously on the lower surface of the bottom part is formed.

The shape of the bottom surface portion (10) may be circular as shown in FIG. 2, but is not limited thereto, and may be a triangle, a quadrilateral or other polygons. The upper surface of the bottom portion of the surface of fill media (10) (10a), if the other and the lower surface of the bottom portion (1 0) (10b), the upper surface (10a) may be a flat, uneven It may be formed. Examples of such irregularities include an arc-shaped groove formed near the outer periphery of the upper surface (10a).

For example, as shown in FIG. 3 (a), it can be illustrated convex portions formed in the vicinity of the inner periphery of the side wall (20) of the upper surface portion (10a) and (30). 2 to 20 convex portions can be formed, preferably 2 to 10, and more preferably 2 to 5. 3A is a plan view of a petri dish body (100) having six convex portions, FIG. 3B is a right side view thereof , FIG. 3C is a front view thereof , and FIG. ) Is a bottom view. Incidentally, the convex portion (30) has been uniformly disposed on the upper surface (10a), when it is assumed one of the axis passing through the center of the upper surface (10a), it is arranged asymmetrically in the axial It may be a thing. This is because, when the convex portion (30) is configured to be asymmetrical, distortion that occurs evenly when the petri dish body (100) is gripped from the left and right can be efficiently avoided. Note that the convex portion (30) is arranged so that the top portion is arranged within 3 mm from the side wall (20), for example, in the case where the diameter of the petri dish is 10 cm so as not to affect colony identification. It is preferable to be provided.

  FIG. 4A shows a partial cross-sectional view taken along line AA in FIG. The height (h1) of the convex part (30) is 0.5 to 3 mm, more preferably 1.0 to 2.5 mm. The width (w1) is 0.3 to 1.0 mm, more preferably 0.4 to 0.8 mm. Within this range, the distortion of the bottom surface portion (10) can be avoided, and after filling the culture medium, irregularities can be formed on the bottom surface portion of the culture medium, and the separation can be efficiently suppressed.

  It is preferable that all the corners of the convex part (30) are formed by arcs. If the corner portion of the convex portion (30) is an arc, the generation of bubbles at the time of filling the medium can be suppressed, and cracking from the corner portion can be suppressed after the medium is solidified.

  FIG. 4B is a partial cross-sectional view taken along the line BB in FIG. The aspect by which a bottom face part (10) protrudes linearly and a convex part (30) is formed is shown. In addition, although there is no restriction | limiting in the length (L1) of a convex part (30), Preferably, the full length of a convex part (30) is 30 to 90% of the perimeter of a petri dish main body (100), More preferably, 50- 90%.

  In addition, although the above demonstrated in the case where the convex part (30) was formed in the upper surface (10a) of a bottom face part, the case where the same shape is formed as a recessed part may be sufficient. Separation of the culture medium can be avoided by forming irregularities on the upper surface (10a) of the bottom surface portion (10).

On the other hand, in the present invention, as shown in FIG. 2, the upper surface (10a) of the bottom surface portion (10) may be a flat surface. If it is flat, it is excellent in the visibility of microorganisms.
(Ii) Side wall In the petri dish body for preparing a culture medium of the present invention, the side wall (20) disposed on the outer periphery of the bottom surface portion (10) is connected to the periphery of the bottom surface portion (10) at a substantially right angle. In addition, the upper end portion may be a taper shape that is slightly widened.

  In the present invention, the bottom surface portion (10) and the side wall (20) are all formed by circular arcs at the corner portions. Therefore, the corner of the upper end of the side wall (20) is also formed in an arc. As shown in FIG. 4A, it is preferable that the corner portion formed by connecting the bottom surface portion (10) and the side wall portion (20) is also formed in an arc. In addition, although the aspect in which the convex part (30) is formed in the upper surface (10a) of a bottom face part (10) is shown in the said FIG. 4, it is the same also when such a convex part (30) does not exist. This embodiment is shown in FIG. FIG. 5 is a partial cross-sectional view taken along line CC of FIG.

  In the present invention, as shown in FIG. 5, a bulge portion (23) may be formed at the upper end portion of the side wall (20). The corners of the bulging part (23) are formed in a circular arc. When the bulging portion (23) having an arcuate corner is formed at the upper end of the side wall (20), the contact area with the lid (200) is reduced. Can be reduced, and scratches caused by vibrations can be avoided.

(Iii) Foot part In this invention, the foot part (40) is formed in the lower surface (10b) of the said bottom face part (10). In the petri dish body (100) shown in FIG. 2 (d), four legs (40) are evenly formed on the lower surface (10b) of the bottom surface (10). By forming the foot portion (40), friction between the bottom surface portion (10) and the mounting table is reduced, and peeling of the culture medium due to vibration can be avoided.

  Further, the number and length of the foot portions (40) are not particularly limited, and may be, for example, a continuous ring-shaped foot portion formed along the side wall (20), and is divided into a plurality of discontinuities. It may be made of a protrusion. Furthermore, the foot (40) may be disposed asymmetrically with respect to the axis, for example, assuming any axis passing through the central portion of the petri dish body (100). When the foot (40) is disposed asymmetrically, distortion during use and storage can be avoided more efficiently.

  Moreover, when forming the said convex part (30) in the upper surface (10a) of a bottom face part, as shown, for example in FIG. 6, the said convex part which the leg part (40) formed in the upper surface of the bottom face part (10) Preferably, the foot (40) is formed on the lower surface (10b) of the bottom surface (10) in the gap between the (30) and the convex (30). The convex portion (30) on the upper surface (10a) of the bottom surface portion (10) and the foot portion (40) on the lower surface of the bottom surface portion (10) form a gap between the convex portions (30) and the foot portion (40). By being disposed so as to be filled, deformation of the petri dish body (100) can be suppressed.

In this invention, as shown in the said FIG. 5, the height (h2) of a leg part (40) is 0.2-3 mm, More preferably, it is 0.5-2 mm.
In the present invention, the foot part (40) is also characterized in that the corner part is formed by an arc. If the top is an arc, the friction with the mounting table can be further reduced.

(2) Lid As shown in FIG. 7, the lid (200) of the petri dish of the present invention includes a top surface (210) and side walls (220) disposed on the outer periphery of the top surface (210). Thus, the top surface portion (210) is formed with an edge height portion (230) that can be fitted to the upper end of the side wall (20) of the petri dish body (100). 7B is a left side view of the lid portion 200 that can be suitably used in the present invention shown in FIG. 1, FIG. 7C is a right side view, FIG. 7D is a front view, and FIG. 7 (e) is a bottom view. The rear view is the same as the front view.

(I) Edge height part In this invention, the edge height part (230) which can be fitted with the upper end of the side wall (20) of a petri dish main body (100) is formed, It is characterized by the above-mentioned. When the upper end of the side wall (20) of the petri dish body (100) is attached to the edge height portion (230) formed on the lid portion (200), the movement of the lid portion (200) during use is reduced. It is possible to suppress the generation of scratches that are likely to occur due to impact.

FIG. 8 is a partial sectional view taken along line AA in FIG. Endaka portion formed in the lid portion (200) for use in the present invention (230) is preferably a continuous edge height of the ring shape is disposed in the vicinity of the side wall (220) (230). In FIG. 8, reference numeral 240 is a collision raised portion which will be described later. Further, the petri dish body (100) when the lid part (200) is mounted is indicated by a broken line, and the culture medium petri dish body (100) for stacking a plurality of culture medium petri dishes is placed on the upper part of the lid part (200). Shown in broken lines.

  The top surface portion (210) of the lid portion (200) is relatively recessed by the edge height portion (230) formed in the vicinity of the outer periphery of the lid portion (200), and another petri dish body (100) is placed in the recessed portion. When placed, the feet (40) of the petri dish body (100) come into contact with the recesses of the top surface (210) and are stably laminated. The width (w2) of the edge height portion (230) is 1.5 to 5 mm, more preferably 2 to 4 mm. If it is the said range, since the width | variety of the upper end of the side wall (20) of a petri dish main body (100) is generally 0.8-1.5 mm, a petri dish main body will be in the edge high part (230) of a cover part (200). The side wall (20) of (100) can be easily mounted, and the lid (200) can be prevented from shaking. Moreover, the petri dish body (100) can be stably laminated on the top surface part (210). In order to avoid friction, it is preferable that the bottom surface portion (10) of the petri dish body (100) does not contact the top surface portion (210) of the lid portion (200). Therefore, it is preferable to adjust the depth of the edge height portion (230) of the lid portion (200) to be shallower than the height (h2) of the foot portion (40).

(Ii) Projection Part In the present invention, the projection part (240) may be formed on the upper surface of the top surface part (210) of the lid part (230). FIG. 7A shows a mode in which five protrusions (240) are formed evenly in the vicinity of the outer periphery of the top surface part (210). In general, the culture medium petri dish (300) is stored by inverting the top and bottom after filling the culture medium. Therefore, when the protrusion (240) is formed on the top surface part (210) of the lid part (200), it functions as a foot part at the time of storage, reduces friction with the mounting table, and efficiently avoids peeling of the culture medium. be able to. Therefore, collision raised portion height (240) (h3), like the foot (40), 0.2 to 3 mm, more preferably 0.5 to 2 mm.

  The said protrusion part (240) may consist of a discontinuous protrusion divided | segmented into plurality similarly to the leg part (40) formed in the above-mentioned petri dish main body (100). Further, it may be arranged on the top surface portion (210) in a laterally or vertically asymmetric manner. Distortion during use and storage can be avoided more efficiently.

Furthermore, it is preferable that the protrusion (240) is also formed with a circular arc at the corner. If the top is an arc, the friction with the mounting table can be further reduced.

FIG. 9 shows a partially enlarged view of the vicinity of the line BB in FIG. FIG. 9 shows a mode in which a gap is formed between the protrusion (240) and the protrusion (240). In the present invention, corners such as the feet (40) of the petri dish body (100) are formed by arcs to reduce friction. However, when the petri dish for medium preparation is laminated, it is laminated with slight vibration. Things may collapse. However, if the protrusion (240) is formed on the outer periphery of the upper surface of the lid (200), the protrusion (240) becomes a barrier, and such sliding can be stopped.

(Iii) Rib In the present invention, a rib (235a) disposed in parallel with the bottom surface of the edge height portion (230) is formed inside the edge height portion (230) of the lid portion (200). Also good. Furthermore, a rib (235b) formed on the side wall of the rib (235a) may be formed. FIG. 10 shows a partially enlarged view of the vicinity of the line CC in FIG.

  The height (h4) of the rib (235a) is 0.1 to 1.0 mm. The rib (235a) may be formed in any of the edge height portions (230), and the number thereof is preferably 3 to 20. Moreover, the rib (235b) should just be formed in a part of said rib (235a), and the size is not ask | required.

  FIG. 11 shows a cross section taken along line BB of FIG. In addition, a broken line is the petri dish main body (100) at the time of mounting | wearing with a cover part (200). When the rib (235a) is not present, the upper end of the side wall (20) of the petri dish body (100) is in contact with the entire inner surface of the edge height portion (230), but when the rib (235a) is formed, Since the upper end of the side wall (20) of the petri dish body (100) and the rib (235a) are in contact with each other, the occurrence of scratches due to the contact between the lid (200) and the petri dish body (100) is suppressed and air permeability is ensured. By doing so, generation | occurrence | production of the water droplet after filling a culture medium to a bottom face part (10) can be suppressed. Furthermore, the contact area can be reduced, and even when the lid portion (200) vibrates, the amount of transmission of the impact can be reduced, and peeling of the culture medium can be prevented. Similarly, when the rib (235b) is formed, the contact area between the outside of the side wall (20) of the petri dish body (100) and the side wall (220) of the lid (200) is reduced, and similarly to the rib (235a). In addition, the effect of preventing the generation of scratches due to the contact between the lid (200) and the petri dish body (100) and the effect of suppressing water droplets by ensuring air permeability are exhibited. Furthermore, by reducing the contact area, even when the petri dish body (100) or the lid (200) vibrates, the amount of shock transmitted can be further reduced, and the medium can be prevented from peeling off.

(3) Petri dish for medium preparation The petri dish for medium preparation (300) of the present invention can be prepared by attaching a lid (200) to the petri dish body for medium preparation (100). A transparent petri dish can be produced by using polystyrene or the like.

(4) Petri dish for medium preparation and manufacturing method of cover part The petri dish for medium preparation (300) of this invention can manufacture a petri dish body (100) and a cover part (200) by injection molding, die-cutting molding, etc., respectively. it can.

  Examples of members constituting the culture medium petri dish (300) include polyolefin resins such as polypropylene, polyamide resins, polystyrene, polyethylene terephthalate, polycarbonate, ABS, AS, and the like. In addition, it is preferable that the resin injection port in the case of injection molding is a center part of a bottom face part (10) or a top surface part (210).

  ADVANTAGE OF THE INVENTION According to this invention, the petri dish for culture medium production in which peeling of the culture medium was suppressed efficiently can be provided, and is useful.

10 ... bottom surface of petri dish body for medium preparation,
10a ... the upper surface of the bottom surface of the petri dish body for medium preparation,
10b: the lower surface of the bottom surface of the petri dish body for medium preparation,
20 ... Side wall of petri dish body for medium preparation,
30 ... a convex part formed on the bottom part of the petri dish body for medium preparation,
40 ... feet formed on the bottom of the petri dish body for medium preparation,
100 ... Petri dish body for medium preparation,
200 ... lid,
210 ... the top surface of the lid,
220 ... side wall of the lid,
230 ... the height of the edge of the lid,
235 ... a rib formed on the inner side of the rim,
240 ... a protrusion formed on the upper surface of the lid,
300... Petri dish for preparing the medium of the present invention

Claims (6)

A petri dish body for preparing a culture medium comprising a bottom surface portion and side walls disposed on the outer periphery of the bottom surface portion,
A convex portion provided in the vicinity of the side wall is formed on the bottom surface portion ,
Discontinuously leg portion is formed on the lower surface of the bottom portion,
Said side wall, said bottom portion and the foot, the corner portion is formed in an arc,
And the convex portion, the said foot mutual, between the protrusions, and wherein Rukoto is disposed so as to fill the gaps between the foot, the medium creation laboratory dish body. A petri dish lid composed of a top surface portion and a side wall disposed on the outer periphery of the top surface portion,
The top surface portion is formed with an edge height portion that can be fitted to the upper end of the side wall of the petri dish body,
A plurality of ribs are formed inside the edge height portion ,
A petri dish lid part, wherein a protrusion is formed on the upper surface of the edge height part. The petri dish cover according to claim 2, wherein the protrusions are configured discontinuously. Before Kien higher region, wherein the corners of said protrusions are formed in a circular arc, the cover portion of the petri dish according to claim 2 or 3 wherein. 1 Symbol and media creation laboratory dish body of the mounting claims, media creation petri dish comprising a cover portion of the petri dish according to any one of claims 2 to 4.   A medium obtained by filling the medium-producing petri dish according to claim 5 with a medium.

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